In a VBA project I'm supporting, I ran into a line where a cell is assigned the value

"=RC[4] / (" + Format(100 - dblNewProdSaving) + " / 100)"

I get a run-time error on this line. However, if I manually change the cell from where dblNewProdSaving is taken, from 0,02 to 0.02, it runs. Why is this and what can I do about it?

Gustaf